163739472 has 80 divisors (see below), whose sum is σ = 464220288. Its totient is φ = 49420800.

The previous prime is 163739453. The next prime is 163739479. The reversal of 163739472 is 274937361.

It is a super-2 number, since 2×163739472² = 53621229381677568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163739479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30597 + ... + 35547.

Almost surely, 2^163739472 is an apocalyptic number.

163739472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163739472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232110144).

163739472 is an abundant number, since it is smaller than the sum of its proper divisors (300480816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163739472 is a wasteful number, since it uses less digits than its factorization.

163739472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028 (or 5022 counting only the distinct ones).

The product of its digits is 190512, while the sum is 42.

The square root of 163739472 is about 12796.0725224578. The cubic root of 163739472 is about 547.0803656762.

The spelling of 163739472 in words is "one hundred sixty-three million, seven hundred thirty-nine thousand, four hundred seventy-two".